Abstract Four samples of magnesium sulphite in different hydration states were prepared and characterized by thermal (TG/DTG/DTA) analysis and X-ray powder diffraction. Evidence was derived for the existence of a previously unreported crystalline phase of approximate composition MgSO 3 · H 2 O. The other samples were the hexa-, tri-, and dihydrates. The temperature of dehydration was found to increase
摘要 制备了四种不同
水合状态的
亚硫酸镁样品,并通过热分析(TG/DTG/DTA)和X射线粉末衍射对其进行了表征。证据表明存在先前未报告的近似组成 MgSO 3 · H 2 O 的结晶相。其他样品是六
水合物、三
水合物和
二水合物。发现脱
水温度随着含
水量的降低而升高。另一方面,对于较低的
水合物,脱
水的吸热性稳步下降。